The very word orthognathic means orthos - to straighten and gnathic - concerning jaws. It is the specialized field of surgery that deals with surgical correction of deformities of facial bones present at birth as well as acquired during some time of life or the other. These procedures help patients affected by facial deformity, to shed all their inhibited behavioural patterns and low self-esteem which they have due to the facial deformity they are afflicted with. The procedure helps the patient in improving their facial appearance, shedding their fears of social rejection and adding to their self-esteem and communicative capability. These deformities pose not only esthetic but also psychological and functional problems such as speech, mastication and respiratory difficulties. These related problems are also very often corrected by orthognathic surgical procedures.